Synonyms of uphill

1 Syllable
up
2 Syllables
upstream, hard-won, rising, strenuous, knottier, toilful, arduous, climbing, skyward, knotty, mounting
3 Syllables
ascending, acclivous, toilsome, difficult, ballbuster, uprising, labored, antrorse, heavenward
4 Syllables
infestive, difficile, troublesome, reticular
6 Syllables
energy-consuming